Wrench.



Nd. 732,752. PATENT-ED mLYv, 190a.

- L. KULBS.

WRENCH.

APPLIOATION FILED MAR. 13. 1903.

no MODEL.

a g m: 57 fig j ammo;

-UNITED STATES iatented .iui 7, 1903.

PATENT OFFICE.

WRENCH.

SPECIFICATION forming part bf Letters I'atentltlo. 732,752, dated'J'uly 7,1903. Application filed March 13, 1903- Serial No. 14715595. (No model.)v

To all whom it may concern-.-

Be it known that I, LEO KULES, a citizen of the United States, residing at Homestead, in

the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertainsto make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates particularly to sliding-jaw wrenches, and has for its object to provide improved means whereby a quick adjustment of the sliding jaw may be effected.

A further objectis to form an improved wrench in which the movable jaw is operated and supported by a spirally-grooved spindle which is rotated by the reciprocation of a manually-movable device. j ,1

With these and other objectsin view an embodiment of the invention is hereinafter described, and is illustrated in the accompanying drawings, in which- Figures 1 and 2 are longitudinal sections in different planes. Fig. 3 is a front view. Fig. 4. is a back view, and Fig. 5 is an elevation of the collar by which the jaws are adjusted.

The fi xed jaw. of the wrench is indicated at 6 integralwith a shank 7, on which the sliding jaw 8 moves, and the shank is boxed or incased to form a handle 9.

A spindle is indicated at 10, finding its bearings at 11 in the casing ofthe handle. Endwise movement of the spindle is prevented by a collar 1O thereon. The spindle extends lengthwise of the handle and has an outer portion spirally grooved, as at 12, which enters a threaded bore in the sliding jaw 8. To lessen the friction, the threads (indicated at 12*) are quite short and may be nothing more than pins projecting into the groove. The inner portion of the spindle within the handle has a spiral groove 13, preferably opposite in direction and of somewhat greater pitch than groove 12. The grooves may be -in the same direction and of any pitch desired; but the right and left grooves are believed to produce better action, and the greater pitch of the groove in the inner portion produces a quicker action than would otherwise be the case. The spindle is rotatedbymeans of a sliding collar 14, which is slidable on the portion of the spindle within the handle-casing. The collar has" threads or projections 14, which engage in the groove 13, and it will be apparent that when the collar is moved back and forth the spindle will be rotated and the jaw adjusted accordingly. The collaris moved and rotation thereof prevented by spring finger-pieces 15, which are secured to one side of the collar and project therefrom through a longitudihal slot 16 in the front of the handle of the casing. The opposite edges of this slot are notched, as at This holds the parts spindle by preventing any slide of the collar which would otherwise occur in consequence of the end thrust on the spindle when the wrench is at'work. By pressing the pieces 15 together they may be disengaged from the notches and the collar moved to effect the adjustment desired. It will be seen that the spindle may be rapidly rotatedby sliding the collar along the spiral of great pitch, which produces quick action of the sliding jaw. When at work, the end thrust of. the spindle is sustained by its bearings, and all that the collar sustains is the turning tendency.

What I'claim as new, and desire to secure by Letters Patent, is

1. In a wrench, the combination with a fixed jaw having a shank, of a jaw movable lengthwise of the shank,-a spirally-grooved spindle engaging the movable jaw, a-. sliding non-rotatable collar on the spindle, a rack supported on the shank and'extending along beside the spindle, and a spring" projection on the collar, engageable with the rack, sub stantially as described.

2. In a wrench, the combination with a tending through the slot and adapted to enfixed jaw having a shank, of a movable jaw gage the notches. 10 on the shank, a spirally-grooved spindle 011- In testimony whereof I affix my signature gaging the movable jaw, a slotted handle-casin presence of two witnesses.

5 ing on the shank, the edge of the slot being LEO KULES.

notched, and a collar slidable lengthwise on Witnesses: the spindle, having a projection engaging in O. M. CUBBISON, the groove, and projecting finger-pieces ex- WM. S. BULLOCK. 

